1101021131 has 6 divisors (see below), whose sum is σ = 1280779740. Its totient is φ = 943732356.

The previous prime is 1101021127. The next prime is 1101021143. The reversal of 1101021131 is 1311201011.

It is a happy number.

It is not a de Polignac number, because 1101021131 - 2² = 1101021127 is a prime.

It is a super-2 number, since 2×1101021131² = 2424495061817038322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101021161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11234861 + ... + 11234958.

It is an arithmetic number, because the mean of its divisors is an integer number (213463290).

Almost surely, 2^1101021131 is an apocalyptic number.

1101021131 is a deficient number, since it is larger than the sum of its proper divisors (179758609).

1101021131 is an equidigital number, since it uses as much as digits as its factorization.

1101021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22469833 (or 22469826 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1101021131 is about 33181.6384616553. The cubic root of 1101021131 is about 1032.5994388572.

Adding to 1101021131 its reverse (1311201011), we get a palindrome (2412222142).

The spelling of 1101021131 in words is "one billion, one hundred one million, twenty-one thousand, one hundred thirty-one".